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CTV: A New Method for Mapping a Full Scale Prototype of an Axial Compressor FREE

[+] Author Affiliations
Vasco Mezzedimi, Pierluigi Nava

Nuovo Pignone, Firenze, Italy

Dave Hamilla

General Electric, Schenectady, NY

Paper No. 96-GT-535, pp. V004T11A011; 10 pages
doi:10.1115/96-GT-535
From:
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7875-0
  • Copyright © 1996 by ASME

abstract

The full mapping of a new gas turbine axial compressor at different speeds, IGV settings and pressure ratios (from choking to surge) has been performed utilizing a complete gas turbine with a suitable set of modifications.

The main additions and modifications, necessary to transform the turbine into the Compressor Test Vehicle (CTV), are:

- Compressor inlet throttling valve addition

- Compressor discharge bleed valve addition

- Turbine 1st stage nozzle area reduction

- Starting engine change (increase in output and speed range).

This method has been successfully employed on two different single shaft heavy-duty gas turbines (with a power rating of 11MW and 170 MW respectively).

The paper describes the theoretical basis of this testing method and a specific application with the above mentioned 170 MW machine.

Copyright © 1996 by ASME
This article is only available in the PDF format.

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